/*
 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __MEM_RUBY_SLICC_INTERFACE_ABSTRACTENTRY_HH__
#define __MEM_RUBY_SLICC_INTERFACE_ABSTRACTENTRY_HH__

#include <iostream>

#include "mem/protocol/AccessPermission.hh"

class DataBlock;

class AbstractEntry
{
  public:
    AbstractEntry();
    virtual ~AbstractEntry() = 0;

    // Get/Set permission of the entry
    AccessPermission getPermission() const;
    void changePermission(AccessPermission new_perm);

    // The methods below are those called by ruby runtime, add when it
    // is absolutely necessary and should all be virtual function.
    virtual DataBlock& getDataBlk() = 0;

    virtual void print(std::ostream& out) const = 0;

    AccessPermission m_Permission; // Access permission for this
                                   // block, required by CacheMemory
};

inline std::ostream&
operator<<(std::ostream& out, const AbstractEntry& obj)
{
    obj.print(out);
    out << std::flush;
    return out;
}

#endif // __MEM_RUBY_SLICC_INTERFACE_ABSTRACTENTRY_HH__
